How to permanently remove a default add-on
Blender comes with a &quot;Light&quot; version of Archipack, you can't &quot;Remove&quot; it with a button like custom add-ons. This is true for all add-ons that come shipped with Blender.
The custom add-ons get installed into a separate folder (Appdata/Roaming/Blender Foundation/Blender/2.xx/Scripts/Addons on Windows), while the &quot;default&quot; ones can be found in the blender installation location.
You can see the actual install location in the File field when expanding the Add-on informations. You can actually see it in the screenshot you posted.
To permanently delete a &quot;default&quot; add-on, go to the location mentioned in the File field and simply delete the corresponding folder or .py file. Next time you open Blender, it won't be loaded.